(中国航空规划建设发展有限公司, 北京 100120)

［摘要］乌兰察布城展馆主体形式为钢筋混凝土框架剪力墙，内部存在空间钢桁架、双层钢网壳等多种结构类型，存在大悬挑、错层、钢与混凝土连接、钢结构异形节点等。双层球幕钢网壳作为悬挑桁架的支点，也是设计的一个亮点和难点。从结构基础选型到主体结构整体分析、从钢结构整体计算设计思路到复杂关键节点分析均进行了详细的阐述，重点利用PKPM及MIDAS两种软件对主体结构进行了多遇地震下的反应谱分析和弹性时程分析，并将结果进行比较。对双层球幕球壳结构进行分体计算，确保结构的经济及安全性。

［关键词］多遇地震；  钢桁架； 关键构件

中图分类号：TU318    文献标识码：A    文章编号：1002-848X(2015)03-0087-06

Structural design on Wulanchabu City Exhibition Hall

Song  Xiaohong，  Xu Rui， Jing Hui， Li Ling

（China Aviation Planning and Construction Development Co., Ltd.,  Beijing 100120, China）

Abstract:The reinforced concrete frameshear wall system is used in the main structure of Wulanchabu City Exhibition Hall with spatial steel truss and doublelayer spherical latticed shell structure in inner space. Some irregularities exist in the structure such as large cantilever, staggered floor, connection of steel and concrete and specialshaped steel joint. The doublelayer spherical latticed shell, which is the fulcrum of the cantilever truss, features the highlight and difficulty in design. The selection of foundation structure, overall analysis on the main structure, the overall design and calculation ideas and complex key joint analysis were introduced in detail. The response spectrum and elastic timehistory analysis of the main structure under the frequent earthquake were accomplished by using programs of PKPM and MIDAS, and the results were analyzed and compared. The doublelayer spherical latticed shell was analyzed separately to ensure the economy and safety of the structure.

Keywords:frequent earthquake;  steel truss； key member

作者简介：宋晓红，高级工程师，一级注册结构工程师，Email：sxhzzmtt@163.com。

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